December 27, Brisen (Switzerland): "My vario reacted to the weak, pulsating thermals with perfect precision, speed and differentiation. This allowed me to use even the weakest bubbles, climb to the peak, leaving all the others below.What an incredible flight at the end of the year!" - Jörg

Welcome!

We are Volirium*, the Swiss company that built the very first electronic variometer for free-flying pilots, over 35 years ago. Since then we have created numerous electronic helpers that enable paraglider and hang glider pilots around the world to fly longer, higher, further, faster and safer.